Question on: WAEC Mathematics - 1997
Which of the following equations has its roots as 4 and -5?
A
x2 + 4x - 20 = 0
B
x2 + x + 20 = 0
C
x2 - x + 20 = 0
D
x2 + x - 20 = 0
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Correct Option: D
(x - 4)(x + 5) = 0
x\(^2\) + 5x - 4x - 20 = 0
x\(^2\) + x - 20 = 0
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